fix bugs in thermohaline mixing

src/MINT/MINT_X_from_surface.c

src/MINT/MINT_binary_nucsyn.c

src/MINT/MINT_convection.c

src/MINT/MINT_init.c

src/MINT/MINT_nucsyn.c

src/MINT/MINT_prototypes.h

src/MINT/MINT_remesh.c

src/MINT/MINT_thermohaline.c

src/binary_c_debug.h

src/binary_c_parameters.h

src/evolution/evolution_forward_Euler.c

src/evolution/evolution_nucsyn.c

src/evolution/evolution_prototypes.h